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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 813 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.133.6 × 100 =
  2. 2.33.56 ÷ 10 =
  3. 3.347.1 ÷ 10 =
  4. 4.38.21 × 1000 =
  5. 5.8.31 ÷ 1000 =
  6. 6.152.1 × 1000 =
  7. 7.42.11 ÷ 1000 =
  8. 8.111.8 × 10 =
  9. 9.318.7 × 1000 =
  10. 10.268.1 ÷ 10 =
  11. 11.219.7 ÷ 100 =
  12. 12.15.46 × 1000 =
  13. 13.421.7 ÷ 1000 =
  14. 14.17.33 ÷ 100 =
  15. 15.38.34 ÷ 1000 =
  16. 16.481.5 × 10 =
  17. 17.13.74 × 10 =
  18. 18.4.16 ÷ 10 =
  19. 19.121.2 ÷ 10 =
  20. 20.28.58 × 100 =
  21. 21.241.5 ÷ 10 =
  22. 22.298.9 × 10 =
  23. 23.14.43 × 1000 =
  24. 24.40.06 × 10 =
  25. 25.35.15 ÷ 1000 =
  26. 26.41.36 ÷ 1000 =
  27. 27.29.92 × 1000 =
  28. 28.207.1 × 10 =
  29. 29.499.9 × 1000 =
  30. 30.40.05 × 1000 =
  31. 31.22.11 × 10 =
  32. 32.168.5 ÷ 100 =
  33. 33.7.54 ÷ 10 =
  34. 34.36.28 × 10 =
  35. 35.19.94 ÷ 10 =
  36. 36.37.11 ÷ 100 =
  37. 37.61.1 ÷ 100 =
  38. 38.92.3 × 100 =
  39. 39.79.4 × 10 =
  40. 40.228.9 ÷ 10 =

Answer key

  1. 13360
  2. 3.356
  3. 34.71
  4. 38210
  5. 0.00831
  6. 152100
  7. 0.04211
  8. 1118
  9. 318700
  10. 26.81
  11. 2.197
  12. 15460
  13. 0.4217
  14. 0.1733
  15. 0.03834
  16. 4815
  17. 137.4
  18. 0.416
  19. 12.12
  20. 2858
  21. 24.15
  22. 2989
  23. 14430
  24. 400.6
  25. 0.03515
  26. 0.04136
  27. 29920
  28. 2071
  29. 499900
  30. 40050
  31. 221.1
  32. 1.685
  33. 0.754
  34. 362.8
  35. 1.994
  36. 0.3711
  37. 0.611
  38. 9230
  39. 794
  40. 22.89

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